منابع مشابه
Irreversible Nucleation in Multilayer Growth
The epitaxial growth process of a high symmetry surface occurs because adatoms meet and nucleate new islands, that eventually coalesce and complete atomic layers. During multilayer growth, nucleation usually takes place on top of terraces where the geometry of the diffusion process is well defined: We have studied in detail the spatiotemporal distribution of nucleation events and the resulting ...
متن کاملPolyelectrolyte Adsorption and Multilayer Formation
In this chapter, we review our recent theoretical work on the formation of polyelectrolyte multilayers. The first layer is obtained by polyelectrolyte adsorption on a surface with an opposite charge. The adsorbed polyelectrolyte charge is sufficient to invert the charge of the surface. Each subsequent layer is bound to the previous one by the formation of a polyelectrolyte complex. Using a Deby...
متن کاملIrreversible adsorption from dilute polymer solutions.
We study irreversible polymer adsorption from dilute solutions theoretically. Universal features of the resultant non-equilibrium layers are predicted. Two broad cases are considered, distinguished by the magnitude of the local monomer-surface sticking rate Q: chemisorption (very small Q) and physisorption (large Q). Early stages of layer formation entail single-chain adsorption. While single-c...
متن کاملAdsorption of ammonia on multilayer iron phthalocyanine.
The adsorption of ammonia on multilayers of well-ordered, flat-lying iron phthalocyanine (FePc) molecules on a Au(111) support was investigated by x-ray photoelectron spectroscopy. We find that the electron-donating ammonia molecules coordinate to the metal centers of iron phthlalocyanine. The coordination of ammonia induces changes of the electronic structure of the iron phthalocyanine layer, ...
متن کاملIrreversible Multilayer Adsorption, P. Nielaba, V. Privman, J.-S. Wang, Ber. Bunsenges. Phys. Chem. 98, 451-454 (1994)
Random sequential adsorption (RSA) models have been studied [1] due to their relevance to deposition processes on surfaces. The depositing particles are represented by hard-core extended objects; they are not allowed to overlap. Numerical Monte Carlo studies and analytical considerations are reported for 1 D and 2D models of multilayer adsorption processes. Deposition without screening is inves...
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ژورنال
عنوان ژورنال: Berichte der Bunsengesellschaft für physikalische Chemie
سال: 1994
ISSN: 0005-9021
DOI: 10.1002/bbpc.19940980340